Magic / Illusions

Well Known Optical Illusions

Here are several optical illusions for the eye. Found the pictures all around the internet.

The Hermann grid illusion. Dark spots appearing and disappearing speedily at the intersections.

Same colour illusion. Square A is exactly the same color as Square B. Here’s proof.

The Revolving Circles Illusion. The two circles seem to move when the viewer’s head is moving forwards and backwards while looking at the black dot.

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